I know its tough to have him rant at you and not throw a bullet back but it does escalate the argument.
When anyone in this family gets hurt everyone knows about it and everyone feels it. This is a family and if you hurt one of us you hurt ALL of us.
If you want a practical example :
Are you telling me when some creep makes a commitment to your daughter, cheats on her, and then abaondons her you arne't going to feel hurt? You aren't going to feel violated? You won't feel absolute rage?
Infidelity of ANY kind devastes the ENTIRE HOME. There is NO PLACE for those selfish hurtful games in this house. If you want to hurt people you know where the door is. If you want to contribute as a member of this family then the games and deceit are left at the door.
You can get yoru point across, that's ok, but its important to FINISH UP with a marriage rebuild offer, a clean slate, and hold him 50% accountable for the rebuliding process.